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WorksheetsLab Pretest
Total questions: 20
Worksheet time: 11mins
Name this apparatus
Spirit lamp
Burner
Bunsen burner
Automatic flame
Apparatus used for heating small quantity of chemicals
Beaker
Flask
Test tube
Gas jar
Mortar and pestle is used for ________
Mixing chemicals
Grinding and crushing solid substances
Both
The following are some safety rules in a laboratory. Which one is not correct?
Do not eat or drink in the laboratory
Do not report any injury, however small, to the teacher
Do not taste chemicals in the laboratory
Do not run in the laboratory
Which of the following is the correct laboratory rule?
Eating in the laboratory while doing practical during lunch time
Running in the laboratory when he is in a hurry
Poking the electrical power points with sharp objects
Using the apparatus in the laboratory only when told to do the science teacher
When can you perform experiments?
Anytime I want
When nobody is looking
When the teacher gives me permission
When my friends says I can
What does this symbol warn us about?
Health hazard
Lung disease
Irritant
Corrosive
What does this symbol mean if found as a label on a substance?
Flamable
Flammable
Set this on fire
What does this symbol stand for?
Flammable
Oxidising
Non-flammable
Explosive
What does this symbol stand for?
Flammable
Oxidising
Irritant
Corrosive
What does this symbol stand for?
Flammable
Toxic
Deadly
Corrosive
What does this symbol warn us of?
Danger
Alert
Toxic
Irritant/harmful
This symbol tell us the chemical it is labelling is:
Harmful to the environment
A pressurised container
Explosive
Corrosive
This lab student is wearing her googles and an apron. But what is she doing wrong?
Pointing the test tube toward her while heating it.
She actually is doing everything correctly.
Her loose hair is too close to the fire.
Not paying attention
